Makes it easy to hem fabrics without sewing. For heavier fabrics you can use two strips, side by side. http://www.ikea.com/aa/en/images/products/sy-iron-on-hemming-strip__0175437_PE328795_S4.JPGSY Iron-on hemming striphttp://www.ikea.com/aa/en/catalog/products/10183216/101.832.16IKEA$3.95/ 10 m